共 7 条
- [4] R&D and Technology Transfer: Firm-Level Evidence from Chinese Industry[J] . Albert G. Z. Hu,Gary H. Jefferson,Qian Jinchang.Review of Economics and Statistics . 2005 (4)
- [6] A model for technical inefficiency effects in a stochastic frontier production function for panel data[J] . G. E. Battese,T. J. Coelli.Empirical Economics . 1995 (2)
- [7] Patent Statistics as Economic Indicators: A Survey[J] . Zvi Griliches.Journal of Economic Literature . 1990 (4)